The Christopher Killer is about a girl named Cameryn whose dream is to go into forensics. She's really smart at it, but she now must help solve the mystery of a murdered girl-someone that she knew....
The owner of the bookstore is the one who killed the clients. In the end, Barrie finds out that he needed money, so he would rob the "Killer Look's" clients. When Barrie finds out, the owner dies and...
The book is about booths side of the story. It tells the story in his perspective. It shows why he killed him, and how. I read it and it is very interesting.